Stainless Steel welded neck flanges are designed to be welded onto pipes, providing a secure and leak-free connection. Its rim has numerous holes drilled into it that enable the flange to be attached to a bolted flange.
The flange provides column strength as well as provides reliable stress distribution through the tapered neck, and transfers stress from the flange to the tubing. Therefore, it can reduce the low-cycle fatigue caused by changes to the tube.
Welding neck stainless steel flanges are widely used in industries such as oil and gas, chemical, and pharmaceuticals due to their strength, durability, and corrosion resistance.
Introduction
Standard |
GOST 12820-80,ANSI B16.5,EN1092, BS4504, JIS B2220-2012, DIN, AMSE B16.5,UNI etc. |
Material |
SS304, SS316, SS304L, SS316L, SS321, SS310 ,1.4401, 1.4403, etc |
Surface |
Available of raised face(RF), full face(FF), Ring joint(RTJ), Groove, Tongue, or customized. |
Type |
Forged |
size |
DN15-DN600, the biggest outside diameter can be up to 6000mm |
Delivery time |
Within 5-30 days after receiving the prepaid |
Packing |
wooden case, plywood cases, pallets, or according to the customers' requirements |
Application |
Widely used in oil and gas, chemistry, drugs, and other fields |
DN |
NPS |
A |
D |
K |
L |
n |
Th |
C |
B |
N |
H |
15 |
1/2 |
21.3 |
90 |
60.3 |
16 |
4 |
M14 |
9.6 |
15.5 |
30 |
46 |
20 |
3/4 |
26.9 |
100 |
69.9 |
16 |
4 |
M14 |
11.2 |
21 |
38 |
51 |
25 |
1 |
33.7 |
110 |
79.4 |
16 |
4 |
M14 |
12.7 |
27 |
49 |
54 |
32 |
11/4 |
42.4 |
115 |
88.9 |
16 |
4 |
M14 |
14.3 |
35 |
59 |
56 |
40 |
11/2 |
48.3 |
125 |
98.4 |
16 |
4 |
M14 |
15.9 |
41 |
65 |
60 |
50 |
2 |
60.3 |
150 |
120.7 |
18 |
4 |
M16 |
17.5 |
52 |
78 |
62 |
65 |
21/2 |
76.1 |
180 |
139.7 |
18 |
4 |
M16 |
20.7 |
66 |
90 |
68 |
80 |
3 |
88.9 |
190 |
152.4 |
18 |
4 |
M16 |
22.3 |
77.5 |
108 |
68 |
100 |
4 |
114.3 |
230 |
190.5 |
18 |
8 |
M16 |
22.3 |
101.5 |
135 |
75 |
125 |
5 |
139.7 |
255 |
215.9 |
22 |
8 |
M20 |
22.3 |
127 |
164 |
87 |
150 |
6 |
168.3 |
280 |
241.3 |
22 |
8 |
M20 |
23.9 |
154 |
192 |
87 |
200 |
8 |
219.1 |
345 |
298.5 |
22 |
8 |
M20 |
27.0 |
203 |
246 |
100 |
250 |
10 |
273 |
405 |
362.0 |
26 |
12 |
M24 |
28.6 |
255 |
305 |
100 |
300 |
12 |
323.9 |
485 |
431.8 |
26 |
12 |
M24 |
30.2 |
303.5 |
365 |
113 |
350 |
14 |
355.6 |
535 |
476.3 |
30 |
12 |
M27 |
33.4 |
- |
400 |
125 |
400 |
16 |
406.4 |
595 |
539.8 |
30 |
16 |
M27 |
35.0 |
- |
457 |
125 |
450 |
18 |
457 |
635 |
577.9 |
33 |
16 |
M30 |
38.1 |
- |
505 |
138 |
500 |
20 |
508 |
700 |
635.0 |
33 |
20 |
M30 |
41.3 |
- |
559 |
143 |
600 |
24 |
610 |
815 |
749.3 |
36 |
20 |
M30 |
46.1 |
- |
663 |
151 |
Xinhang Special Material Co., Ltd. Hangzhou Branch is famous China Leak-Free Connection Weld Neck Flange Used For High-Pressure Pipes suppliers and OEM/ODM Leak-Free Connection Weld Neck Flange Used For High-Pressure Pipes manufacturers, founded in 2007 and moved to Longyou Economic Development Zone, Zhejiang Province, in 2022. It covers an area of 130,000 square meters, more than 30 production lines, 300 workers, 20 R&D people, 30 inspection people and an annual output of 50,000 tons.
It has passed ISO9001:2008 quality management system, PED 97/23/EC EU Pressure Equipment Directive certification, China Special Equipment Manufacturing License (Pressure Tube) TS certification, ASME certification, provincial enterprise standardization management system, ISO14000:2004 environment management system, cleaner production (green enterprise), and a series of certifications, as well as China Classification Society (CCS), American Bureau of Shipping (ABS), British Register of Shipping (LR), Deutsche Veritas (GL), Bureau Veritas Society (BV), Det Norske Veritas (DNV), and Korean Register of Shipping (KR) factory certification.
The main products include stainless steel pipes, pipe fittings, flanges, valves, etc., which are widely used in petroleum, chemical industry, nuclear industry, smelting, shipbuilding, pharmaceuticals, food, water conservancy, electric power, new energy, mechanical equipment, and other fields. The company adheres to the corporate tenet of "quality for survival, reputation for development" and wholeheartedly serves every customer to create a win-win situation.
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